Lyric discussion by RalphMeatchunk 

Cover art for X.Y.U. lyrics by Smashing Pumpkins, The

Songs can mean various, and extremely different things to individual people. In my opinion, this song is about being the nice guy, the girls friend. That always wants to be with her, but just can't. She has a new boyfriend, a real one, that he can't get out of his head. I base this on two lines that really stand out, although I could name a few more. "cause i'm a watcher, and i'm a doer of none" And "i couldn't feel her, and it was just a game"

Also "still i was lonely, and she was by my side, my one and only" He hates being the friend, but will tolerate it as long as her attention is on him. Romantic acts don't matter to him at this point, as long as noone else has her.

"i am made of shamrocks, i am made of stern stuff" He's green with envy, but tough and won't let it show.

"mary had a little lamb, her face was white as snow and everywhere that mary went i was sure to go" He followed her everywhere, total devotion. But none in return.

"from one another, no one should ever come in between us, between us and our love" He can't take the thought of her with another guy.

"and into the eyes of the jackyl i say ka-boom" The "jackyl" represents the "other guy". Finally, he can't take it anymore and decides to end her relationship, in any way possible.

Again, this is just my opinion, and probably not what the actual song is about.